Legal ClassificationsImmigrants and Aliens. The legal terminologies are important to know. An
alien is a person who was not born in the United States and comes into the country
from outside. (Do not confuse this use of the term “alien” with its frequent use in science
fiction to refer to people from outer space.) After the alien enters the United States legally
with the intent to stay in the country, he or she becomes an immigrant. Aliens
admitted legally into the country for temporary periods of time such as tourists or students are
called nonimmigrant aliens. The term legal aliens refers to both these types
of aliens. An alien whose temporary visa has expired and who remains in the country or a
person who entered the country illegally is called an undocumented alien.

Asylees and Refugees. A person who, while in the United States received political
asylum is called an asylee, while a person who applies for this status from abroad is
called a refugee. In both cases the person must prove that he or she would be subject
to persecution in the home country if forced to return.

Residency and Naturalization. A permanent resident alien is a person who
is allowed to live and work in the country without restriction. The permanent resident alien
holds an Alien Registration Receipt Card or Green Card, proof of that status,
and is thus a Green Card holder (the Green Card may not actually be colored green).
A permanent resident can become a citizen through the process of naturalization, and
will thereby become a naturalized citizen, with all rights except the ability to serve in
the office of President of the United States.